body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

#chat-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#chat-box {
    height: 300px;
    overflow-y: auto;
    border: 1px solid #ccc;
    padding: 10px;
    margin-bottom: 20px;
}

#message-input {
    width: calc(100% - 70px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px 0 0 5px;
    margin-right: 10px;
}

#message-form button {
    padding: 10px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
}

#leave-button {
    padding: 10px 20px;
    background-color: #dc3545;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#leave-button:hover {
    background-color: #c82333;
}